filemap: fix page_cache_next_miss() when no hole found

page_cache_next_miss() should return value outside of the specified range
when no hole is found.  However currently it will return the last index
*in* the specified range confusing ondemand_readahead() to think there's a
hole in the searched range and upsetting readahead logic.

Link: https://lkml.kernel.org/r/[email protected]
Signed-off-by: Jan Kara <[email protected]>
Reviewed-by: Josef Bacik <[email protected]>
Tested-by: Zhang Peng <[email protected]>
Cc: Matthew Wilcox (Oracle) <[email protected]>
Signed-off-by: Andrew Morton <[email protected]>

0 files changed, 0 insertions, 0 deletions